Question: Which is the social classification of boyar?
SPARQL (Wikidata): select distinct ?answer where { ?answer wdt:P3716 wd:Q203563}
Answer: Daniil Kholmsky, Ivan Andreyevich Khovansky, Ilya Miloslavsky, Feodor Koshka, Aleksey Basmanov, Yuri Dolgorukov, prince Dmitrej Ivanovich Khvorostinin, governor of Volga towns, Dmitriy Ivanovich Godunov, Streshnev, Boyar Fyodor Shaklovity